.headerMain {
    width: 100%;
    border: 1px solid #ddd;
    height: 40px;
    display: flex;
    align-items: center;
}

.headerMain input {
    height: 35px;
    line-height: 35px;
    width: 100%;
    border: none;
    padding-left: 10px;
}

.headerMain input:focus {
    outline: none;
}